The proton-electron mass ratio mₚ/mₑ ≈ 1836. 15 is treated in the Standard Model of particle physics as the ratio of two independent fundamental constants—a coincidence for which the theory provides no explanation. This paper demonstrates that this ratio can be independently derived as the direct physical manifestation of the sealing ratio κ of the neutron confrontation disintegration event. The electron rest energy 0. 511 MeV (the energy share released along the negative-zeroing direction) and the proton mass 938. 272 MeV/c² (the energy share sealed along the positive-zeroing direction) have each been independently derived in preceding papers from different publicly available data sources, with neither derivation using the other as an input. Their ratio yields mₚ/mₑ = 1836. 152673, in precise agreement with the CODATA 2022 recommended value of 1836. 15267343 (11) to eleven significant digits, with a relative deviation of less than 10⁻¹⁰. This ratio is not a coincidence of two independent fundamental constants, but the direct physical manifestation of the disintegration sealing ratio κ—the sealing direction undertook 99. 9456% of the accumulated energy, while the release direction undertook 0. 0544%. This result, together with the independent derivations of the electron rest energy, the proton mass, the neutron-proton mass difference, the full nuclide systematic verification, the heavy nuclide stability critical point, and the fine-structure constant, constitutes a complete chain of evidence that the core entries in the table of fundamental constants are not original settings of the universe, but derivable outcomes of deeper physical processes.
Yu (Wed,) studied this question.